CA1221618A - Device for cutting blocks of granite, marble, stone and like materials - Google Patents
Device for cutting blocks of granite, marble, stone and like materialsInfo
- Publication number
- CA1221618A CA1221618A CA000443458A CA443458A CA1221618A CA 1221618 A CA1221618 A CA 1221618A CA 000443458 A CA000443458 A CA 000443458A CA 443458 A CA443458 A CA 443458A CA 1221618 A CA1221618 A CA 1221618A
- Authority
- CA
- Canada
- Prior art keywords
- slide
- carrying frame
- blade
- shoes
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
- B27B3/02—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame
- B27B3/10—Saw frames or guides therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
- B27B3/22—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with horizontally-reciprocating saw frame
- B27B3/26—Mechanisms for producing the reciprocating movement of the saw frame; Arrangements for damping vibrations; Arrangements for counter-balancing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/06—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades
- B28D1/068—Components, e.g. guiding means, vibrations damping means, frames, driving means, suspension
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/687—By tool reciprocable along elongated edge
- Y10T83/688—With dynamic balancing or shock absorbing means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mining & Mineral Resources (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Laminated Bodies (AREA)
- Control Of Cutting Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Finishing Walls (AREA)
- Road Signs Or Road Markings (AREA)
- Sawing (AREA)
Abstract
A B S T R A C T
The device for cutting blocks of granite, marble, stone and other like materials by means of diamonded blades displaced in a reciprocating movement by a blade carrying frame, said blade carrying frame being itself connected to a reciprocating motor unit, characterized in that at least the blade carrying frame is connected to sliding frame by means of vibrations damping means.
The device for cutting blocks of granite, marble, stone and other like materials by means of diamonded blades displaced in a reciprocating movement by a blade carrying frame, said blade carrying frame being itself connected to a reciprocating motor unit, characterized in that at least the blade carrying frame is connected to sliding frame by means of vibrations damping means.
Description
1~,4!1t;i~3 FIELD OF TI~E INVENTION
-The present invention relates to a new cutting device which can be used without modification for cutting any natural or artificial materials.The device co~prises a plurality of blades placed in a frame which is supported for being moved in a reciprocating rectilinear movement or beneath a guiding frame, the guiding frame being itself vertically movable by use of jacks or cylinders.
BACKGROUND OF THE INVENTION
Multi-blade frame machines of this type are Xnown and have been described for example in German patent 2,161,393, French Patent 1,440,801, French Patent 1,193,333, Belgian Patent 661,521, and French Patent 586,320-However, it has not been possible up to now to make a multi-purpose machine for industrially sawing materials having an hardness as different as soft stone and granite by using diamond blades. Moreover, even though diamond sawing is well known in stone and marble sawing, there is presently ineffectiveness in performances of the tools and in the output production of corresponding sawing machines. Reasons for such ineffectiveness are as follows :
1 - Diamond blade sawing of granite in particular sawing into thin slices, by use A
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of existing multi-blade frame machines, cannot be embodied because of the too short useful life of the sawing tools. The only presently competitive method consists of interposing metal shot between the blades and the bottom of the sawing line.
-The present invention relates to a new cutting device which can be used without modification for cutting any natural or artificial materials.The device co~prises a plurality of blades placed in a frame which is supported for being moved in a reciprocating rectilinear movement or beneath a guiding frame, the guiding frame being itself vertically movable by use of jacks or cylinders.
BACKGROUND OF THE INVENTION
Multi-blade frame machines of this type are Xnown and have been described for example in German patent 2,161,393, French Patent 1,440,801, French Patent 1,193,333, Belgian Patent 661,521, and French Patent 586,320-However, it has not been possible up to now to make a multi-purpose machine for industrially sawing materials having an hardness as different as soft stone and granite by using diamond blades. Moreover, even though diamond sawing is well known in stone and marble sawing, there is presently ineffectiveness in performances of the tools and in the output production of corresponding sawing machines. Reasons for such ineffectiveness are as follows :
1 - Diamond blade sawing of granite in particular sawing into thin slices, by use A
.
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of existing multi-blade frame machines, cannot be embodied because of the too short useful life of the sawing tools. The only presently competitive method consists of interposing metal shot between the blades and the bottom of the sawing line.
2 - Present designs of such machines accomodate only insignificant variations in the cutting parameters, and therefore it is not practicable to combine the cutting-parameters for - optimization of the cutting conditions.
3 - In presently kn~wn machines, moving parts are guided by metal-on-metal contact of surfaces having a plurality of shapes, and despite their tolerances, the wear of the parts causes decreasing accuracy, followed by transmittal of vibrations and impacts to the cutting tools, while simultaneously shortening the operating or useful life of the tools.
Prior art has also taught, for making bearing means or for guiding slides, devices of a fluid type which prevent or at least limit the friction between parts having to be relatively displaced. This is for example the case of German patent 904,946, French patent 69 17777, 25 French patent 1,299,218, US patent 3,466,951 and French patent 1,372,163 -, ~ .
ll~Z1~18 OBJECTS AND SUMMARY OF TEIE INVE~TION
The present invention creates a new machinewhich can be provided with one ten or a plurality of tens of blades, and makes it possible to saw natural or artificial materials, whatever is their hardness to the diamond tool. The invented machine improves the quality of the sawn surfaces as well as the cutting conditions, the output production and therefore the production costs.
It is also noted that improvements in the sawing quality make possible, by obtaining a better state of surface, to save an appreciable time on the ulterior surfacing and polishing steps.
According to the invention, in a device for cutting stone, marble, granite and the like materials by means of diamonded blades displaced in a reciprocating movement by a blade carrying frame, the blade carrying frame being itself connected to a reciprocating movement motor unit, at least the blade carrying frame is connected to a sliding frame through vibration damping elements. This embodiment makes possible to surprisingly avoid that the diamond sawing blades are submitted to vibrations during a sawing operation, and it results therefrom a very good cutting speed, a cutting accuracy which has never been previously reached and a lower wearing of the sawing blades, the diamond particles of which are not tcrn away nor otherwise deteriorated, but only regular wear of the ~ 3 -'-: - ~ .
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blades occurs.
Various further features of the present invention are moreover shown in the following detailed disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
.
Embodiments of the invention are shown as non limiting examples in the accompanying drawings, wherein :
Fig. 1 is a diagrammatic elevation view with parts broken away of a reclprocating sawing machine embodying the invention ;
Fig. 2 is a front elevation view corresponding to Fig. 1 ;
Fig. 3 is a cross section of Fig. 1 taken substantially along line III-III of Fig. 1 ;
Fig. 4 is a detail of one of ~he components shown in Fig. 3 ;
Fig. 5 is a diagrammatic cross-section of another detail of embodiment;
Fig. 6 shows a detail of the crankshaft connection for the embodiment of Fig. t ;
Fig. 7 is an alternative embodiment to that of Fig. 3.
DETAILED DESCRIPTION OF THE INVENTION.
The machine shown in the drawings comprises rear uprights 1, la and front uprights 2, 2a which are for ~ . .
: . - .
.
;i8 example placed at angles of a right angled trapezium.
The uprights 1, 1a and 2, 2a are connected together by upper side members 3 and upper cross members 4. The uprights 1, 1a and 2, 2a are surrounded by guiding units 5 to which is fixed a slide carrying frame 6. The slide carrying frame 6 supports by means of suspension brackets 7 a blade carrying frame 8. The blades 9 of the frame 8 are provided for sawing a block tO, for example a block of granite.
The blade carrying frame 8 is laterally provided with at least one pin 11 for pivotally mounting a head of a connecting rod 12. The foot of the connecting rod 12 is pivotally mounted on a pin 13 provided,at en~ of a crank-shaft 14. The crank-shaft 14 is wedged on a shaft 15 carrying an inertia wheel 16 driven by an electric motor 17.
The electric motor 17 is preferably of a variable speed '' type.
The up and down movement of the blade carrying frame 8 is controlled by the movement of the slide carrying ~' ' 20 frame 6. In the example shown in the drawings, the movement of the slide carryin~ frame 6 is provided by means of screws 18 placed in the uprights 1, 1a and 2, 2a. The ,rotation speed of the screws 18 is synchronized by transmission boxes 19 connected together by means of shafts 20 driven by a motor-reductor unit 21.
According to the present invention, for ,~ ~
.. . . - .. : .
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. . . -: : . : . -' ~ : . : . :. - . . .
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~2~16i8 preventing propagation of th~ vibrations, a fluid type connection is provided between the various means submitted to a relative movement.
The blade carrying frame 8 is connected near its ends by means of the suspension brackets 7, to sliding devices 22. As shown in Fig. 3,an embodiment of each sliding device 22 comprises a profile member 23 on which slides 24, 25 are mounted. The slides 24, 25 are maintained between a set of shoes 26, three shoes in the present example. The shoes 26 are placed in a casing 27 which is itself fixed to the side members of the slide carrying frame 6.
Each shoe defines, in the side thereof facing the slide 24, at ieast one housing 28 which is fed with pressurized fluid, for example oil, through a channel 29.
Ducts 30 are provided for feeding each housing 28.
The above mentioned embodiment enables to maintain the slides 24, 25 in a state closely related to a levitation state and has for its result to greatly reduce friction upon displacement of the blade carrying frame 8 relatively to the slide carrying frame 6, and most especially to prevent transmission of the vibrations caused, in particular, by friction between the blades 9 and the block 10 during the sawing operation, and the vibrations caused by the vertical and horizontal driving systems of thelblade carrying frame 8.
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' '' ~" ' ~ ' , ' , ~ ' ;18 A device similar to the sliding device 22 can be similarly embodied between the guiding units 5 and the uprights 1, la and 2, 2a.
As also shown in Fig. 3, the pin 11 on which is pivotally mo~unted the head of the connecting rod 12 comprises a fluid bearing box 31 containing curved shoes 32 forming a housing 33 which communicates with a duct 34for supplying a pressurized fluid.
By providing a similar construction for the pin 13 of the foot of the connecting rod 12, the motor unit 17, 16 is isolated from the blade carrying fr~me and, therefore, the vibrations emanating from either the blade carrying frame or the motor unit are suitably damped and/or filtered.
It is further possible to mount also the shaft 15 on fluid bearings as above described.
For preventing vibrations from being transmitted from or to the motor-reductor unit 21, the screws 18, the rotation of which causes a fall then a raise of the slide carrying frame 6,are connected to the slide carrying frame 6 by means of nuts 35 tFig. 5) having a plurality of channels 36 connected to at least one collecting chamber 37 into which a pressurized fluid is supplied through a duct 38.
The drawings show that the channels 36 terminate at the bottom of the screw threads of the nut 35, which .
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makes that the nut, the threads of which are machined relatively to these of the screw t8,is not in physical direct contact with the screw.
In ordex to prevent dirt from enteriny the S fluid circuit and the threads of the nuts 35 ana screws 18, the nuts 35 are provided with sealing bellows 39 or similar means.
The device of the invention which provides isolation of the various mobile parts, the one with respect to thP other by means which damp and/or filter the vibrations makes possible to use cutting blades of the diamond type (i.e. blades in which abradant elements formed by diamonds are maintained in a matrix), from which a risk of tearing away of the diamonds is either prevented or at least greatly reduced. Vibrations are actually positive'ly suppressed.
In order that the diamond blades are used at best of their characteristics,the motor 17 1s of a variable speed type, which enables variation of the beating rate which is for example adjusted in dependence of the nature of the material of the block 10 to be sawn. As shown in Fig. ~, it is possible to realize at least the crank-shaft 14 in the form of a telescopic element of a known structure for varying the stroke of the blades, i.e. in particular for optimizing the stro~e in function of the block 10 and the compositions of the - - . . .
.
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.
tool for using always the blades at optimurn sawing conditions. In this case, the speed of the motor 17 is adjusted so that the maximum linear speed reached by the blades will not exceed a predetermined threshold.
The motor-reductor unit 21 is itself preferably made also in the form of a variable speed unit in order that the speed of fall of the ~lades which determines the depth of each wor~-pass during their sliding moven,ent does not exceed a predetermined threshold.
Although the screw 18 and nut 35 arrangement of Fig. 5 has been shown as a screw-jack, it is also possible to use known hydraulic sliding cylinders, the important polnt being that the cutting blades will always exert a constant unitary pressure on the material to be cut.
The device can be piloted by a micro-computer system shown as 17a in Fig. 1 for providing the possibility of continuously varying the stroke of the blades, the beating rate as well as the speed af fall, the micro-computer system 17a having stored the optimum combination of the above parameters.
Although not shown in the drawings, it is obviously possible to displace the blade carrying frame 8 by means of hydraulic cylinders, preferably of the double action type, acting either lirectly on the blade carrying frame 8 or on the sliding devices 22.
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.
An hydraulic motor of a known type can be used instead of the motor-reductor unit 17 and inertia wheel 16 of Fig. 1.
In the embodiment of Fig. 7, which is a variation of the embodiment of Fig~ 3, similar parts having the same reference numerals as in Fig. 3, the shoes 26 as well as the shoes 32 and the nut channels 36 can be formed by polar parts of electromagnetic windings which generate magnetic fields for maintalning in a levitation state the parts which r,ust be isolatea in order to prevent transmission of vibrations.
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Prior art has also taught, for making bearing means or for guiding slides, devices of a fluid type which prevent or at least limit the friction between parts having to be relatively displaced. This is for example the case of German patent 904,946, French patent 69 17777, 25 French patent 1,299,218, US patent 3,466,951 and French patent 1,372,163 -, ~ .
ll~Z1~18 OBJECTS AND SUMMARY OF TEIE INVE~TION
The present invention creates a new machinewhich can be provided with one ten or a plurality of tens of blades, and makes it possible to saw natural or artificial materials, whatever is their hardness to the diamond tool. The invented machine improves the quality of the sawn surfaces as well as the cutting conditions, the output production and therefore the production costs.
It is also noted that improvements in the sawing quality make possible, by obtaining a better state of surface, to save an appreciable time on the ulterior surfacing and polishing steps.
According to the invention, in a device for cutting stone, marble, granite and the like materials by means of diamonded blades displaced in a reciprocating movement by a blade carrying frame, the blade carrying frame being itself connected to a reciprocating movement motor unit, at least the blade carrying frame is connected to a sliding frame through vibration damping elements. This embodiment makes possible to surprisingly avoid that the diamond sawing blades are submitted to vibrations during a sawing operation, and it results therefrom a very good cutting speed, a cutting accuracy which has never been previously reached and a lower wearing of the sawing blades, the diamond particles of which are not tcrn away nor otherwise deteriorated, but only regular wear of the ~ 3 -'-: - ~ .
' lZ~
blades occurs.
Various further features of the present invention are moreover shown in the following detailed disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
.
Embodiments of the invention are shown as non limiting examples in the accompanying drawings, wherein :
Fig. 1 is a diagrammatic elevation view with parts broken away of a reclprocating sawing machine embodying the invention ;
Fig. 2 is a front elevation view corresponding to Fig. 1 ;
Fig. 3 is a cross section of Fig. 1 taken substantially along line III-III of Fig. 1 ;
Fig. 4 is a detail of one of ~he components shown in Fig. 3 ;
Fig. 5 is a diagrammatic cross-section of another detail of embodiment;
Fig. 6 shows a detail of the crankshaft connection for the embodiment of Fig. t ;
Fig. 7 is an alternative embodiment to that of Fig. 3.
DETAILED DESCRIPTION OF THE INVENTION.
The machine shown in the drawings comprises rear uprights 1, la and front uprights 2, 2a which are for ~ . .
: . - .
.
;i8 example placed at angles of a right angled trapezium.
The uprights 1, 1a and 2, 2a are connected together by upper side members 3 and upper cross members 4. The uprights 1, 1a and 2, 2a are surrounded by guiding units 5 to which is fixed a slide carrying frame 6. The slide carrying frame 6 supports by means of suspension brackets 7 a blade carrying frame 8. The blades 9 of the frame 8 are provided for sawing a block tO, for example a block of granite.
The blade carrying frame 8 is laterally provided with at least one pin 11 for pivotally mounting a head of a connecting rod 12. The foot of the connecting rod 12 is pivotally mounted on a pin 13 provided,at en~ of a crank-shaft 14. The crank-shaft 14 is wedged on a shaft 15 carrying an inertia wheel 16 driven by an electric motor 17.
The electric motor 17 is preferably of a variable speed '' type.
The up and down movement of the blade carrying frame 8 is controlled by the movement of the slide carrying ~' ' 20 frame 6. In the example shown in the drawings, the movement of the slide carryin~ frame 6 is provided by means of screws 18 placed in the uprights 1, 1a and 2, 2a. The ,rotation speed of the screws 18 is synchronized by transmission boxes 19 connected together by means of shafts 20 driven by a motor-reductor unit 21.
According to the present invention, for ,~ ~
.. . . - .. : .
. - ., , , ,.: . . : -: .
:. ~ .. : : . ' , :
. . . -: : . : . -' ~ : . : . :. - . . .
. , . - - : . . . :
- . . .
~2~16i8 preventing propagation of th~ vibrations, a fluid type connection is provided between the various means submitted to a relative movement.
The blade carrying frame 8 is connected near its ends by means of the suspension brackets 7, to sliding devices 22. As shown in Fig. 3,an embodiment of each sliding device 22 comprises a profile member 23 on which slides 24, 25 are mounted. The slides 24, 25 are maintained between a set of shoes 26, three shoes in the present example. The shoes 26 are placed in a casing 27 which is itself fixed to the side members of the slide carrying frame 6.
Each shoe defines, in the side thereof facing the slide 24, at ieast one housing 28 which is fed with pressurized fluid, for example oil, through a channel 29.
Ducts 30 are provided for feeding each housing 28.
The above mentioned embodiment enables to maintain the slides 24, 25 in a state closely related to a levitation state and has for its result to greatly reduce friction upon displacement of the blade carrying frame 8 relatively to the slide carrying frame 6, and most especially to prevent transmission of the vibrations caused, in particular, by friction between the blades 9 and the block 10 during the sawing operation, and the vibrations caused by the vertical and horizontal driving systems of thelblade carrying frame 8.
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' '' ~" ' ~ ' , ' , ~ ' ;18 A device similar to the sliding device 22 can be similarly embodied between the guiding units 5 and the uprights 1, la and 2, 2a.
As also shown in Fig. 3, the pin 11 on which is pivotally mo~unted the head of the connecting rod 12 comprises a fluid bearing box 31 containing curved shoes 32 forming a housing 33 which communicates with a duct 34for supplying a pressurized fluid.
By providing a similar construction for the pin 13 of the foot of the connecting rod 12, the motor unit 17, 16 is isolated from the blade carrying fr~me and, therefore, the vibrations emanating from either the blade carrying frame or the motor unit are suitably damped and/or filtered.
It is further possible to mount also the shaft 15 on fluid bearings as above described.
For preventing vibrations from being transmitted from or to the motor-reductor unit 21, the screws 18, the rotation of which causes a fall then a raise of the slide carrying frame 6,are connected to the slide carrying frame 6 by means of nuts 35 tFig. 5) having a plurality of channels 36 connected to at least one collecting chamber 37 into which a pressurized fluid is supplied through a duct 38.
The drawings show that the channels 36 terminate at the bottom of the screw threads of the nut 35, which .
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makes that the nut, the threads of which are machined relatively to these of the screw t8,is not in physical direct contact with the screw.
In ordex to prevent dirt from enteriny the S fluid circuit and the threads of the nuts 35 ana screws 18, the nuts 35 are provided with sealing bellows 39 or similar means.
The device of the invention which provides isolation of the various mobile parts, the one with respect to thP other by means which damp and/or filter the vibrations makes possible to use cutting blades of the diamond type (i.e. blades in which abradant elements formed by diamonds are maintained in a matrix), from which a risk of tearing away of the diamonds is either prevented or at least greatly reduced. Vibrations are actually positive'ly suppressed.
In order that the diamond blades are used at best of their characteristics,the motor 17 1s of a variable speed type, which enables variation of the beating rate which is for example adjusted in dependence of the nature of the material of the block 10 to be sawn. As shown in Fig. ~, it is possible to realize at least the crank-shaft 14 in the form of a telescopic element of a known structure for varying the stroke of the blades, i.e. in particular for optimizing the stro~e in function of the block 10 and the compositions of the - - . . .
.
. .
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. .
.
tool for using always the blades at optimurn sawing conditions. In this case, the speed of the motor 17 is adjusted so that the maximum linear speed reached by the blades will not exceed a predetermined threshold.
The motor-reductor unit 21 is itself preferably made also in the form of a variable speed unit in order that the speed of fall of the ~lades which determines the depth of each wor~-pass during their sliding moven,ent does not exceed a predetermined threshold.
Although the screw 18 and nut 35 arrangement of Fig. 5 has been shown as a screw-jack, it is also possible to use known hydraulic sliding cylinders, the important polnt being that the cutting blades will always exert a constant unitary pressure on the material to be cut.
The device can be piloted by a micro-computer system shown as 17a in Fig. 1 for providing the possibility of continuously varying the stroke of the blades, the beating rate as well as the speed af fall, the micro-computer system 17a having stored the optimum combination of the above parameters.
Although not shown in the drawings, it is obviously possible to displace the blade carrying frame 8 by means of hydraulic cylinders, preferably of the double action type, acting either lirectly on the blade carrying frame 8 or on the sliding devices 22.
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.
An hydraulic motor of a known type can be used instead of the motor-reductor unit 17 and inertia wheel 16 of Fig. 1.
In the embodiment of Fig. 7, which is a variation of the embodiment of Fig~ 3, similar parts having the same reference numerals as in Fig. 3, the shoes 26 as well as the shoes 32 and the nut channels 36 can be formed by polar parts of electromagnetic windings which generate magnetic fields for maintalning in a levitation state the parts which r,ust be isolatea in order to prevent transmission of vibrations.
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Claims (14)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A device for cutting blocks of granite, marble , stone and similar materials, comprising :
a plurality of sawing blades ;
a blade-carrying frame into which at least the sawing blades are fixed and having slide means for directing horizontal motion of said frame ;
a drive-motor unit connected to said blade-carrying frame for displacing said sawing blade in a reciprocating motion, a slide-carrying frame of generally rectangular cross-section, upright supports, a guide unit on each upright support connected to said slide-carrying frame for directing vertical movement of said slide-carrying frame, said slide means of said blade-carrying frame being adapted to fit within said slide-carrying frame, and vibration damping means for creating pressure on the top, bottom and each side of said slide means to urge said slide means away from contact with said slide-carrying frame, thus providing a vibration dampened connection between said slide-carrying frame and said blade-carrying frame, whereby propagation of vibrations to the sawing blades is minimized.
a plurality of sawing blades ;
a blade-carrying frame into which at least the sawing blades are fixed and having slide means for directing horizontal motion of said frame ;
a drive-motor unit connected to said blade-carrying frame for displacing said sawing blade in a reciprocating motion, a slide-carrying frame of generally rectangular cross-section, upright supports, a guide unit on each upright support connected to said slide-carrying frame for directing vertical movement of said slide-carrying frame, said slide means of said blade-carrying frame being adapted to fit within said slide-carrying frame, and vibration damping means for creating pressure on the top, bottom and each side of said slide means to urge said slide means away from contact with said slide-carrying frame, thus providing a vibration dampened connection between said slide-carrying frame and said blade-carrying frame, whereby propagation of vibrations to the sawing blades is minimized.
2, Apparatus according claim 1 wherein said vibration damping means comprises horizontally spaced and opposed shoes, each having a cavity facing said slide member positioned between said horizontally spaced shoes, vertically spaced and opposed shoes each having a cavity facing said slide member between said vertically spaced shoes, each of said shoes being connected to a source of fluid under pressure, whereby pressurized fluid is introduced to the cavity within each of said shoes under sufficient pressure to force said slide away from each of said shoes, into a simulated state of levitation, thus providing damping of vibrations to the saw blades.
3. Apparatus according to claim 2 wherein said fluid is a liquid or a gas.
4. Apparatus according to claim 1 wherein the vibration damping means comprises : at least two sets of electromagnetic elements, one set being horizontally opposed within said slide-carrying frame and having said slide member disposed between them, the second set being vertically opposed within said frame and having said slide member disposed between them, each of said elements being connected to a source of electric power, whereby upon initiating current flow, each element establishes a repulsion force to repel the slide away from each of the elements and place it in a state simulating levitation.
5. Apparatus according to claim 1 wherein said guide units are connected to associated control means for raising and lowering the guide units and the associated slide carrying frame the exact same distance simultaneously on each upright support.
6. Apparatus according to claim 5 wherein said control means comprises a screw thread on said upright support which threadedly engages a portion of said guide unit, each guide unit including means for supplying pressurized fluid between the threads of said guide unit and said upright support.
7. Apparatus according to claim 6 further comprising means for synchronizing the rotational speed of the threaded portion of each upright support.
8. Apparatus according to claim 5 wherein the control means comprises a hydraulic cylinder integral with each upright support.
9. A device according to claim 1 wherein the blade carrying frame (8) is controlled by at least one connecting rod (12) of which one head (11) or foot (13) articulation is provided with fluid bearing means.
10 - A device according to claim 9 wherein the connecting rod is driven by a variable speed motor unit to which it is connected by means of an inertia wheel (16), a shaft (13) and a crank-shaft (14).
11 - A device according to claim 9 wherein the shaft (15) is mounted on fluid bearing means.
12 - A device according to claim 10 wherein the crank-shaft (14) has an adjustable length.
13 - A device according to claim 1 comprising means for maintaining constant a unitary pressure applying the diamond bla-des on the block (10) to be cut.
14 - A device according to claim 1 wherein means are provided for relatively varying in an optimum manner during a cutting operation, parameters related to beating rate, length of stroke and speed of fall of the blade carrying frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8221040A FR2537913A1 (en) | 1982-12-15 | 1982-12-15 | DEVICE FOR CUTTING GRANITE BLOCKS, MARBLE, STONES AND THE LIKE |
| FR8221040 | 1982-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1221618A true CA1221618A (en) | 1987-05-12 |
Family
ID=9280133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000443458A Expired CA1221618A (en) | 1982-12-15 | 1983-12-15 | Device for cutting blocks of granite, marble, stone and like materials |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4566427A (en) |
| EP (1) | EP0113619B1 (en) |
| JP (1) | JPS59171609A (en) |
| AT (1) | ATE19993T1 (en) |
| BR (1) | BR8306884A (en) |
| CA (1) | CA1221618A (en) |
| DE (2) | DE3363829D1 (en) |
| ES (1) | ES8406277A1 (en) |
| FR (1) | FR2537913A1 (en) |
| GR (1) | GR78781B (en) |
| IN (1) | IN161345B (en) |
| MX (1) | MX158577A (en) |
| PT (1) | PT77828B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8829945D0 (en) * | 1988-12-22 | 1989-02-15 | Nat Res Dev | Mechanical devices and structures |
| US6196104B1 (en) | 1998-04-23 | 2001-03-06 | Premark Rwp Holdings, Inc. | Apparatus for producing sheets of solid surfacing |
| WO2000078517A1 (en) * | 1999-06-17 | 2000-12-28 | General Electric Company | Method and apparatus for cutting granite |
| US7089924B2 (en) * | 2001-12-14 | 2006-08-15 | Diamond Innovations, Inc. | Granite slabs cut with frame saw employing blades with diamond-containing segments and method of cutting thereof |
| US7082939B2 (en) * | 2002-12-10 | 2006-08-01 | Diamond Innovations, Inc. | Frame saw for cutting granite and method to improve performance of frame saw for cutting granite |
| US7637257B2 (en) * | 2003-08-14 | 2009-12-29 | Diamond Innovations, Inc. | System and method for cutting granite or similar materials |
| CN104708110B (en) * | 2013-12-13 | 2017-07-04 | 贵州中烟工业有限责任公司 | Lift adjustable sawing machine |
| WO2016170506A1 (en) * | 2015-04-22 | 2016-10-27 | Ism S.R.L. | Machine for cutting blocks of stone |
| CN205766904U (en) * | 2016-05-13 | 2016-12-07 | 上海飞宙机械设备有限公司 | A kind of saw blade inclined cut granite, the rear-mounted gang saw of flywheel of quartz |
| CN106042020A (en) * | 2016-07-29 | 2016-10-26 | 无锡乐华自动化科技有限公司 | Solid garbage cutting device |
| CN106738365B (en) * | 2017-01-13 | 2018-09-25 | 日照海恩锯业有限公司 | A kind of equipment for cutting granite |
| CN109909551A (en) * | 2019-04-11 | 2019-06-21 | 桂林特邦新材料有限公司 | Diamond rope saw eccentric abrasion prevention preparation method |
| CN110549155B (en) * | 2019-07-24 | 2021-11-30 | 湖北文理学院 | Method for weakening vibration of machine tool and machine tool structure |
| CN114654537A (en) * | 2022-04-15 | 2022-06-24 | 霍邱县亨兴工艺品有限公司 | Straight edge corrector of woodwork |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE661521A (en) * | ||||
| FR1440801A (en) * | 1966-08-31 | |||
| US180344A (en) * | 1876-07-25 | Improvesvlent in stone-sawing wiachsnes | ||
| FR586320A (en) * | 1924-04-29 | 1925-03-24 | Roller guide for horizontal and vertical multi-blade saw frames | |
| FR1035463A (en) * | 1951-04-16 | 1953-08-25 | Machine for sawing marble | |
| DE904946C (en) * | 1951-12-14 | 1954-02-25 | Hermann Engels | Adjustable sliding pieces of machine parts that slide back and forth, especially for the frame of saw gates swinging in stands |
| US2816582A (en) * | 1954-04-30 | 1957-12-17 | Soderhamns Verkst Er Ab | Adjustable bearing means and lubrication system for reciprocating gang saws |
| FR1193333A (en) * | 1957-11-09 | 1959-11-02 | Damping device for the framing of saws on natural stone sawing machines and similar machines | |
| FR1299218A (en) * | 1961-08-09 | 1962-07-20 | H A Waldrich | Screw drive system in particular for machine tools |
| US3197921A (en) * | 1962-08-17 | 1965-08-03 | Heald Machine Co | Grinding machine |
| FR1372163A (en) * | 1963-10-04 | 1964-09-11 | Willy Sauter | Device for lubricating the sliding surfaces of slides of trolleys and similar parts |
| US3466951A (en) * | 1968-01-15 | 1969-09-16 | Babcock & Wilcox Co | Machine tools and instruments |
| NL6807674A (en) * | 1968-05-31 | 1969-12-02 | ||
| US3635532A (en) * | 1969-02-08 | 1972-01-18 | Riv Officine Di Villar Perosa | Hydrostatically supported machine tool slide |
| DE2161393A1 (en) * | 1971-12-10 | 1973-06-14 | Richard Flohr | STONE FRAME SAW |
| NL7307042A (en) * | 1973-05-21 | 1974-11-25 | ||
| US4105012A (en) * | 1975-08-20 | 1978-08-08 | Siemens Aktiengesellschaft | Apparatus for cutting up hard and brittle material |
-
1982
- 1982-12-15 FR FR8221040A patent/FR2537913A1/en active Granted
-
1983
- 1983-12-13 DE DE8383402401T patent/DE3363829D1/en not_active Expired
- 1983-12-13 AT AT83402401T patent/ATE19993T1/en active
- 1983-12-13 DE DE198383402401T patent/DE113619T1/en active Pending
- 1983-12-13 EP EP83402401A patent/EP0113619B1/en not_active Expired
- 1983-12-14 US US06/561,020 patent/US4566427A/en not_active Expired - Fee Related
- 1983-12-14 BR BR8306884A patent/BR8306884A/en not_active IP Right Cessation
- 1983-12-14 ES ES528056A patent/ES8406277A1/en not_active Expired
- 1983-12-14 GR GR73250A patent/GR78781B/el unknown
- 1983-12-15 PT PT77828A patent/PT77828B/en not_active IP Right Cessation
- 1983-12-15 IN IN1531/CAL/83A patent/IN161345B/en unknown
- 1983-12-15 JP JP58235252A patent/JPS59171609A/en active Granted
- 1983-12-15 CA CA000443458A patent/CA1221618A/en not_active Expired
- 1983-12-15 MX MX199793A patent/MX158577A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES528056A0 (en) | 1984-08-01 |
| DE113619T1 (en) | 1985-02-28 |
| GR78781B (en) | 1984-10-02 |
| BR8306884A (en) | 1984-07-24 |
| EP0113619A1 (en) | 1984-07-18 |
| ES8406277A1 (en) | 1984-08-01 |
| US4566427A (en) | 1986-01-28 |
| FR2537913B1 (en) | 1985-03-29 |
| JPH0356525B2 (en) | 1991-08-28 |
| EP0113619B1 (en) | 1986-05-28 |
| ATE19993T1 (en) | 1986-06-15 |
| IN161345B (en) | 1987-11-14 |
| PT77828B (en) | 1986-03-27 |
| JPS59171609A (en) | 1984-09-28 |
| MX158577A (en) | 1989-02-15 |
| DE3363829D1 (en) | 1986-07-03 |
| FR2537913A1 (en) | 1984-06-22 |
| PT77828A (en) | 1984-01-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |